Catalyst system for olefin oligomerization reaction, and method for olefin oligomerization using the same

Abstract

Provided are a catalyst system for olefin oligomerization reaction and a method for olefin oligomerization, and more particularly, a catalyst system for olefin oligomerization reaction and a method for olefin oligomerization, which enable more efficient preparation of alpha-olefin, because a catalytic active ingredient is supported on a support, thereby exhibiting high activity in olefin oligomerization reaction even by using smaller amounts of a catalyst composition and a cocatalyst.

The invention claimed is: 
     
       1. A catalyst system for olefin oligomerization reaction, comprising:
 at least one ligand compound which is selected from the following Chemical Formulas; 
 a chromium source; and 
 a support: 
 [Chemical Formulas] 
 
       
         
           
           
               
               
           
         
       
     
     
       2. The catalyst system for olefin oligomerization reaction of  claim 1 , wherein all diphosphine groups form coordinate bonds with chromium. 
     
     
       3. The catalyst system for olefin oligomerization reaction of  claim 1 , wherein a molar ratio of the chromium source to the ligand compound is 1 or more. 
     
     
       4. The catalyst system for olefin oligomerization reaction of  claim 1 , wherein the chromium source is one or more compounds selected from the group consisting of chromium(III) acetylacetonate, chromium(III) chloride tetrahydrofuran, chromium(III) 2-ethylhexanoate, chromium(III) acetate, chromium(III) butyrate, chromium(III) pentanoate, chromium(III) laurate, chromium(III) tris(2,2,6,6-tetramethyl-3.5-heptanedionate), and chromium(III) stearate. 
     
     
       5. The catalyst system for olefin oligomerization reaction of  claim 1 , further comprising a cocatalyst supported on the support. 
     
     
       6. The catalyst system for olefin oligomerization reaction of  claim 5 , wherein the cocatalyst is one or more compounds selected from the group consisting of trimethyl aluminium, triethyl aluminium, triisopropyl aluminium, triisobutyl aluminum, ethylaluminum sesquichloride, diethylaluminum chloride, ethyl aluminium dichloride, methylaluminoxane, and modified methylaluminoxane. 
     
     
       7. The catalyst system for olefin oligomerization reaction of  claim 5 , wherein the cocatalyst is supported in an amount of 5 to 15 mmol/g with respect to 1 g of the support. 
     
     
       8. A method for oligomerization comprising:
 oligomerizing an olefinic monomer in the presence of the catalyst system of  claim 1  to form an alpha-olefin oligomer. 
 
     
     
       9. The method for oligomerization of  claim 8 , wherein the olefinic monomer comprises ethylene. 
     
     
       10. The method for oligomerization of  claim 8 , wherein the oligomerizing is performed at a temperature of 5° C. to 200° C. 
     
     
       11. The method for oligomerization of  claim 8 , wherein the oligomerizing is performed at a pressure of 1 bar to 300 bar.